Module 1
Strings and StringBuilders
Character Arrays

CC315

Array of Strings

 arr = ["a","b","abc"]

Array of Strings

arr = []
arr.append("foo")
arr.append("1234") # here arr == ["foo","1234"]
length = len(arr) # will result in 2
string_arr = "".join(arr) # will result in "foo1234"

With Strings

    function ENCODER(TEXT,X)
        #TEXT is the text to encode
        #X is the offset
        ENC = ""
        loop I from 1 to LENGTH of TEXT
            CURRENT = TEXT[I]
            IF CURRENT IS A LETTER
                CHAR_ENC = GET X-th CHAR after CURRENT
                ENC += CHAR_ENC
            ELSE
                ENC += '*'
        end loop
        return ENC
    end function
 

With Array of Strings

    function ARR_ENCODER(TEXT,X)
        #TEXT is the text to encode
        #X is the offset
        ENC = []
        loop I from 1 to LENGTH of TEXT
            CURRENT = TEXT[I]
            IF CURRENT IS A LETTER
                CHAR_ENC = GET X-th CHAR after CURRENT
                ENC.append(CHAR_ENC)
            ELSE
                ENC.append('*')
        end loop
        return "".join(ENC)
    end function
 

With Strings

    function ENCODER(TEXT,X)
        #TEXT is the text to encode
        #X is the offset
        ENC = ""
        loop I from 1 to LENGTH of TEXT
            CURRENT = TEXT[I]
            IF CURRENT IS A LETTER
                CHAR_ENC = GET X-th CHAR after CURRENT
                ENC += CHAR_ENC
            ELSE
                ENC += '*'
        end loop
        return ENC
    end function
 

With Array of Strings

    function ARR_ENCODER(TEXT,X)
        #TEXT is the text to encode
        #X is the offset
        ENC = []
        loop I from 1 to LENGTH of TEXT
            CURRENT = TEXT[I]
            IF CURRENT IS A LETTER
                CHAR_ENC = GET X-th CHAR after CURRENT
                ENC.append(CHAR_ENC)
            ELSE
                ENC.append('*')
        end loop
        return "".join(ENC)
    end function
 

Array of Strings Walk Through

    function ARR_ENCODER(TEXT,X)        # call ARR_ENCODER("Data is great!",8)
        #TEXT is the text to encode
        #X is the offset
        ENC = []
        loop I from 1 to LENGTH of TEXT
            CURRENT = TEXT[I]
            IF CURRENT IS A LETTER
                CHAR_ENC = GET X-th CHAR after CURRENT
                ENC.append(CHAR_ENC)
            ELSE
                ENC.append('*')
        end loop
        return "".join(ENC)
    end function
 

Array of Strings Walk Through

    function ARR_ENCODER(TEXT,X)        # call ARR_ENCODER("Data is great!",8)
        #TEXT is the text to encode
        #X is the offset
        ENC = []
        loop I from 1 to LENGTH of TEXT
            CURRENT = TEXT[I]
            IF CURRENT IS A LETTER
                CHAR_ENC = GET X-th CHAR after CURRENT
                ENC.append(CHAR_ENC)
            ELSE
                ENC.append('*')
        end loop
        return "".join(ENC)
    end function
 

Array of Strings Walk Through

    function ARR_ENCODER(TEXT,X)        # call ARR_ENCODER("Data is great!",8)
        #TEXT is the text to encode
        #X is the offset
        ENC = []
        loop I from 1 to LENGTH of TEXT
            CURRENT = TEXT[I]
            IF CURRENT IS A LETTER
                CHAR_ENC = GET X-th CHAR after CURRENT
                ENC.append(CHAR_ENC)
            ELSE
                ENC.append('*')
        end loop
        return "".join(ENC)
    end function
 

Array of Strings Walk Through

    function ARR_ENCODER(TEXT,X)        # call ARR_ENCODER("Data is great!",8)
        #TEXT is the text to encode
        #X is the offset
        ENC = []
        loop I from 1 to LENGTH of TEXT
            CURRENT = TEXT[I]
            IF CURRENT IS A LETTER
                CHAR_ENC = GET X-th CHAR after CURRENT
                ENC.append(CHAR_ENC)
            ELSE
                ENC.append('*')
        end loop
        return "".join(ENC)
    end function
 

Array of Strings Walk Through

    function ARR_ENCODER(TEXT,X)        # call ARR_ENCODER("Data is great!",8)
        #TEXT is the text to encode
        #X is the offset
        ENC = []
        loop I from 1 to LENGTH of TEXT
            CURRENT = TEXT[I]
            IF CURRENT IS A LETTER
                CHAR_ENC = GET X-th CHAR after CURRENT
                ENC.append(CHAR_ENC)
            ELSE
                ENC.append('*')
        end loop
        return "".join(ENC)
    end function
 

Fast Forward

    function ARR_ENCODER(TEXT,X)        # call ARR_ENCODER("Data is great!",8)
        #TEXT is the text to encode
        #X is the offset
        ENC = []
        loop I from 1 to LENGTH of TEXT
            CURRENT = TEXT[I]
            IF CURRENT IS A LETTER
                CHAR_ENC = GET X-th CHAR after CURRENT
                ENC.append(CHAR_ENC)
            ELSE
                ENC.append('*')
        end loop
        return "".join(ENC)
    end function
 

Fast Forward

    function ARR_ENCODER(TEXT,X)        # call ARR_ENCODER("Data is great!",8)
        #TEXT is the text to encode
        #X is the offset
        ENC = []
        loop I from 1 to LENGTH of TEXT
            CURRENT = TEXT[I]
            IF CURRENT IS A LETTER
                CHAR_ENC = GET X-th CHAR after CURRENT
                ENC.append(CHAR_ENC)
            ELSE
                ENC.append('*')
        end loop
        return "".join(ENC)
    end function
 

Comparison:
String (S) VS Array of Strings (ARR)